"This year is the seventh warmest since records began in 1850 and rising sea levels caused by climate change are aggravating the impact of storms such as Typhoon Haiyan in the Philippines, the World Meteorological Organization (WMO) said on Wednesday."

"More greenhouse gases in the atmosphere meant a warmer future, and more extreme weather, was inevitable, WMO Secretary-General Michel Jarraud said in a statement during November 11-22 climate talks among almost 200 nations in Warsaw.

The WMO said the first nine months of the year tied with the same period of 2003 as seventh warmest, with average global land and ocean surface temperatures 0.48°C (0.86°F) above the 1961-1990 average."